Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
sang tao » hang tai
van anh » van thanh, tuan anh, van minh
suc van » su van, duc van, luc van
cua tre » cua te, cuu tre, cua triet
sang ma » tang ma, nang ma, mang may
va cao » va cac, va co, va dao
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di cua
ve cao » ve bao, ve cac, ve co

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y ((sang ma) or (sang tao)) hoi. hieu ((ve cao) OR (va cao)) suc van anh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y ((sang ma) OR (sang tao)) hoi. hieu ((ve cao) OR (va cao)) suc van anh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y ((sang ma) or (sang tao)) hoi. hieu ((ve cao) OR (va cao)) suc van anh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach y ((sang ma) or (sang tao)) hoi. hieu ((ve cao) OR (va cao)) suc van anh vi cua tre*.